Smash-protector motion



June 9, 1925. 7 1,540,942

L. N. LA FAYETTE SMASH PROTECTOR MOTION Filed July 20, 1921' 5Sheets-Sheet 1 LL-l ' June 9, 1925. v 1,540,942

I L. N. LA FAYETTE smxsn PROTECTOR MOTI0N\ 7 Filed July 20', 1921 5Sheets-Sheet 2 f7- TU V545 L N.LA FAYETTE SMASH PROTECTOR MOTION FiledJuly 0, 1921, 5 Sheets-Sheet 3 June 9, 1925.

L. N. LA FAYETTE SMASH PROTECTQR MOTION Filed July 20, 1921 5 Sheets-Sheet 4 /7 T TURNEg/S:

June 9, 1925.

L. N. LA FAYETTE SMASH PROTECTOR M OTION Filed July 20, 1921 5Sheets-Sheet 5 Patented June 9,

w en

since.

LOUIS N. LA FAYETTE; OF PLYMOUTH, MASSACIEIUSETTS.

SMASH-PROTECTOR MOTION.

To all whom it may concern.

Be it known that I, LoUIs N. LA FAYn'r rn, of Plymouth, in the county ofPlymouth and State of Massachusetts, a citizen of the 6 United States,have invented anew and useful Improvement in Smash-Protector Motions, ofwhich the followin is a specification.

My invention relates moreparticularly to clectrically-operated smashprotector .mo tions for fancy looms. Such looms utilizea number ofshuttles and contain a number of shuttle boxes located opposite eachother at the two sides of the lay. which are caused 15 to register withthe shuttle race as the pattern of the cloth requires. It sometimeshappens through accident that two shuttle boxes in register. with theshuttle race each contains a shuttle at the same moment so that at theneat picker operation the two shuttles are thrown simultaneously and asmash occurs on the lay, or if only one, of

the opposite box.

the shuttles is thrown the smash occurs in cuit which is only closedwhenthe two opposite shuttle boxes registering withthe lay each contains ashuttle. The closing of this circuit causes the operation of a stopmotion by which the loom is stopped before either of the shuttles isthrown. I V

My invention will be understood byreference to the drawings in which itis shown in its preferred form.

Figure 1 is a view showing in side elevation my improvement applied toaloom the breast beannlay and stop rod being in section, and the partsbeing in normal or ope 'ative position. i

Fig. 2 is a similar view showing a shuttle in one of the boxes and thecircuit closer closed thereby. t

Fig. 3 is also a similar view showing the parts after the stop motionhas acted to hold the lay in stopped position.

Fig. 4. is a plan of the partsin the same position as in Fig. 3 andshowing the electric circuit, and V i Fig. 5 is an elevation of theparts taken on the opposite side iro tlc boxes being omitted. 1 y

1 is the breast beam and 2 is the lay, theseparts being mounted upon thefralne 3 and swords 1, respectively. hand 6 are the shut- Iii the binder7.

the electro magnet thecircuit continues-by n Fig. 1, the shut-Application filed July 20, 1921. Serial No. 486,233.

tle boxes which are mounted at each end of the lay and are operated inthe usual manner. 1 Each shuttle boX contains a binder 7 of usualconstruction. 1 i

v 8 is a r ckable finger which rests against a binder 7 in the box 5. Itis attached to a sleeve .9 on a stud-1O passing through a bracket llmounted onthe lay. This sleeve 9 also carries a contact arm 13 arrangedto engage a contact 14 mounted on a block 1 1-1 attached to the lay 2. I

On each side of thebraeket 11 is an 'insn la ting Washer, 113 andbetween two other washers 114i, 114 is carried the collar 121 which isstationary with relation to the sleeve 9. A horizontal arm 112 integralwith-the collar 121 carries a spring .12 which holds the upper end ofthe linger 8 against The stud carries a cotter pin 91 and one or.moreqwashers 92 atone 75 end, itshead beingn arked 93. The parts arethusheld in position on the stud 10.

These parts are duplicated at the two ends of the lay. r I

, Thecircuit as shown in Fig. 4 is from the battery 24: and wire 15 to.one of the contacts 14, contact arm 13 and metal frame of the lay tothecontact arm 13 and contact 1 1 at the other end of the lay; thence bywire to the terminal 22, circuit breaker 21, second terminal 20 and wire19 to the electro magnet 151, .within the casing 16 of which is anarmature lever which is pivoted at 17, its tail being shown at 18. Fromwire 23 to the battery 2 1. By wires 190 and230 connections may be madewith other parts of the loom such that the stop motion may be operated.M I The casing 16 oft-he electro magnet is mounted on a bracket 26attached tothe breast beam 1 and arranged sot-hat the lay will swingover it. To this bracket26 is pivoted at 27 a guide arm 28, the tailpiece 29 of which carriesa roll 3Ovadjustablymounted on an adjustableextension thereof 301 which rests on the tail 18' of the armature lever,so that when the electro magnet is energized and the armature isattracted the tail 18 will lift the short end of the guidearm and theguide arm will be positivelylowered it being normally held in itshighestposition by a leaf spring 31 attached to an adjustable stationaryhub. 32 on the bracket 26 and engaging the under sideot the toe 281integral with the guidearm 28.

The lay 2 carries a loose hook arm 33 adjustably pivoted thereon at 34,the hooked end 331 of this arm normally riding on the guide arm 28 asthe lay oscillates. 35 is an L-shaped lever pivoted on the bracket 26 at36 and having at one end a catch 37. Its other end is normally verticaland comprises two integral fingers 351' and 352. The arm 35 normallylies in the position shown in Fig. 1 where the catch 37 is normallybelow the line of movement of thehook 331.

of arm 33. hen, however, the armature has been attracted by the closingof the circuit (e. g. when opposite shuttle boxes each contains ashuttle) its tail piece .18 lifts the short end of the guide arm 28 andforces its long "arm down against the force of the spring 31 so that theguide arm 28 lies below the level of the catch 37. On the next forwardmovement of the lay the hook 331 in ridingover the guide arm 28 willride over the catch 37. and on its return movement will engage the catchand operate the lever 35 as below described.

A stop 261 on bracket 26. limits the downward throw of the guide arm 28when moved by the armature 18. l

The arm 351 of the lever35 carries a leaf spring 38 of such shape thatit will normally support the bent end 282 of the guide arm 28, in such away, however, that they may readily be separated upon the operation ofthe armature. The movement of the lever 35 when rocked by the hook 331on the outward movement of the lay carries the spring 38 out of the'pathof the guide arm so that it may be reset when thecircuit is againbroken. p

The arm 352 is located to engage a second leaf spring 353 which ishungfrom the beam 1. This spring normally holds the dagger 40 in itslower or normal position by resting on the pin or projection 401 whichis attached to and projects from the under side of the dagger 40. lNhenthe lever 35 isrocked' as above described the arm 352 pushes the spring353 out from over the pin 401 so that the dagger may be lifted. by thespiral spring 41 to engage the abutment 42 on the lay and prevent itfrom rocking further- One end of this spring is attached to an arm 411projecting from the bracket 26, while the other end of the spring isattached to the dagger 40. The dagger is pivoted tothe lay at 43, itsshorter end being normally engaged by a stop 44 on the shaft 45 whichcarries the shipper handle 46. The lower end 47 of the stop engages theusual stop on the shipper motion. This stop 44 engaging the tail pieceof the dagger, prevents it normally from moving and the stop is movedout of the way at the proper time by means of a'stud 48 on the lever 35which engages an arm 49 on the shaft 45. hen the lever 35 is engaged bythe hook 331 and given its slightly downward move1nent, the stud 48engages the arm 49 and moves the stop 44 out from engagement wii-th thedagger, thus allowing the spring to pull the dagger into engagement withthe abutment 42, at the same moment bringing the further end of the stop47 into such relation with the stop motion as to stop the loom by theoperation of mechanism well known and which is not herein described.This same operation turns the shaft 45 and moves with it the handle Onreversing the movement of the 46. handle 46 the dagger is reset.

i It will be noted from Fig. 4 that the be readily understood. Brieflyit isas fol-v lowsz' When the two shuttles arrive at the same moment inopposite shuttle boxes their binders 7 .will engage the fingers 8 andthrow them out into the position shown in Fig. 2 where the parts whichare atone end and the middle of the machine are shown. The result isthat the circuit which is at all times normally closed at 20, 21 and 22,is also closed between 13 and 14 on both sides of the machine so thatthe magnet 151 is energized; its armature arm 18 is lifted and also theshort end of the guide arm 28, thus depressing the long end of the guidearm pulling it off from the spring 38 and allowing the hook 331 on thearm 33 to engage the catch 37. The pulling of the lever 35which carrieisthe latch 37 by the return movement of the lay throws out the two arms351 and 352 so that the spring 3,8 mm position again to receive theguide arm, and at the same time the spring 353which retains; the daggerin its lower position is released and the dagger is lifted by the spring41, the shaft 45 being also turned slightly by engagement between thestud 48 on lever 35 and the arm 49 thus removing llO the stop 44 fromunder the tail of the V dagger. It will'be noted that the connection 211between the shaft 45 and the circuit closer '21 is in the form of aspring which will yield, thus allowing a small movement to the shaft 45.The lay therefore will be stopped by the operation of the stop 47 inconnection with the usual stop mechanism and the parts willbe maintainedin their stopped position until the shipper handle 46 iii is replaced inits normal position thus rotating the shaft 45 from the position shownin Fig. 3 to the position shown in Fig. 1, allowing the dagger to fallagain and the parts to be reset. The close of the'movement of.the shaft45 breaking the electric connection between 20, 21'and 22 thuscallowsthe fingers to return to their original net controlling the armature 18.In such case, the circuitbeing closedas in the Kip patent by the metaldrop engaging-with the blade and bar when a warp thread breaks, theelectro magnet is energized andthe tail 18 of the armature is lifted sothat the stop motion is operated to stop the 100m as above described. aa

It will occurto those skilled in the art that other parts of the loommay be utilized in like manner to close a circuit through an electromagnet and so operate a stop motion such as I have described.

h'loreover, I do not mean to limit my invention to the preciseconstruction shown in the drawings. Changesin detail which will fallwithin my invention WlllfOOCHI to'those skilled in the art] What I claimas my invention is:

1. A loom comprising a breast beam, a lay and shuttle boxes located ateach end thereof, a binder located in each shuttle box to be displacedby the entry of a shuttle into the box, circuit-closers located to beheld by said binders in circuit-closing position when said binders arein displaced condition, and a circuit comprising an electromagnet andpermanent connections between said electromagnet and saidcircuit-closers, whereby upon the closing of both of saidcircuit-closers, the elcctromagnet will at once be energized, a stopmotion and a locking mechanism, one

member of said locking mechanism being attached to said breast beam andthe other member being attached to sald lay, sald members being normallydisengaged, and.

means whereby upon the energization of said electromagnet said stopmotion will be operated and said locking members will be positioned toengage and lock the lay on its return movement.

2, A loom comprising a lay and shuttle boxes located at each endthereof, a binder located in each shuttle box to be displaced by theentry of a shuttle into the box, circuit-closers located to be closedand held in circuit'closing position by said binders when in'displacedposition and a circuit co1nprismg an electromagnet and permanentconnections between said electromagnet and said circuit-closers, incombination with a stop mot1on and a locking means normally out oflocking position and means for operatlng them, said stop motion and saidlocking means comprising a l guide arm operably connected to thearmature of said electromagnet whereby upon the energizing of saidelectromagnet said guide arm will cause the operation of sald stopmotion to stop the loom and the positioning of said *locking means whenit will lock the lay inits forward position. V

3. A loom comprising a lay and shuttle boxeslocated at each end thereof,a binder located in'each shuttle box-to be displaced by the entry of ashuttle'into the box, circuit closers "located to be closed and heldinclosed position by said binders whenin displaced position, and a circuitcomprising an" electro-magnet and permanent connec-' tions between saidelectro magnet and said circuit closers, in combination with a stopmotion and connections between it and the armature of saidelectro-magnet, whereby when there is shuttle in both shuttle boxes saidbinders will cause the circuit to be closed and said electro-magnetto-be energized to operate said stop motion, and a cir-= curt breaker111 said c rcult and operable by said stop motion thereafter to breakthe ciricuitand de-energize said electro-magnet to ,allow'saidstopmotion to be resetand said loom again to become operative.

4. In a loom, a breast beam, a bracket mounted thereon, a guide armpivotally mounted on saidbracket, a spring nor-" mally'holding saidguide arm out of operative position, a lay, an arm loosely pivot-ed onsaid lay, its free end resting on said guide arm, a stop motioncomprising adagger adapted to engage said lay and means located betweensaid loosely pivoted arm and said dagger whereby when said guide arm ismoved out of normal position said stop motion will be operated to stop,the loom and said dagger will engage saidlay and limit its advancingmovement.

5. In a loom,a breast beam, a lay, a bracket mounted on said beam, aguide arm pivotally mounted on said bracket, a spring normally holdingsaid guide arm out of operative-position, an arm loosely pivoted on saidlay, its free end resting on said. guidearm, a lever mounted on saidbracket,

one end of said lever being in reach of said for moving said levercomprising an arm loosely pivoted on said lay and adapted to engage andoperate said lever, a guide arm, and means for holding it normally outof operative position, the free end of said loosely pivoted arm ridingon said guide arm out of operative relation, with said lever, and meansfor moving said guide arm whereby said'loosely mounted arm and saidlever will be brought into operative relation. a r

7. In a loom, a lay, a breast beam, a bracket attached thereto, a leverpivotally mounted on saidbracket, a shipper shaft, an arm mountedthereon, means operatively connecting said lever and said arm whereby amovement of said lever will cause the operation of said shipper shaft,and means for moving said lever comprising an arm loosely pivoted onsaid lay and adapted to engage and operate said lever, a guide arm, andmeansfor holding it normally out of operative position, thefree end ofsaid loosely pivoted arm riding on said guide arm out of operativerelation with said lever, and means for moving said guide 1, 54,0, 9&2

arm whereby said loosely mounted arm and said lever-will be brought intooperative relation, in combination with a shipper shaftandconnectionsbetween said shipper shaft and said lever whereby the movement of saidlever will cause a movement ofsaid shipper shaft to stop the loom.

8. In a loom, a lay, a breast beam, a bracketv attached thereto, a leverpivotally mounted on said bracket, a shipper shaft,

loosely pivoted arm riding on said guide arm out of operative relationwith said lever, and means for moving said guide arm whereby saidloosely mounted arm andsaid lever will be brought into operative relation, in combinationwith an electro magnet having an armature adapted tomove said guide arm when'said electro magnet is energized, and anelectric circuit comprising said electro magnet, circuit closers andmeans ,forclosing said circuit comprising shuttle boxes mounted atopposite ends of said lay, each having a binder, and a finger adapted toengage said binders and be moved thereby to close a contact when ashuttle box contains a shuttle.

' LOUIS N. LA FAYETTE.

